//
//  UserAccount.swift
//  SinaWeibo
//
//  Created by 石林 on 15/11/15.
//  Copyright © 2015年 石林. All rights reserved.
//

import UIKit

class UserAccount: NSObject,NSCoding {

    //用于调用access_token，接口获取授权后的access token
    var access_token: String?
    //access_token的生命周期，单位是秒数
    var expires_in: NSTimeInterval = 0 {
    
        didSet{
        
            expires_date = NSDate(timeIntervalSinceNow: expires_in)
        }
    }
    //过期日期,开发者5年,普通用户3天
    var expires_date: NSDate?
    //当前授权用户的UID
    var uid: String?
    
    //用户头像地址
    var avatar_large: String?
    //用户昵称
    var name: String?
    
    init(dict: [String: AnyObject]) {
        super.init()
        setValuesForKeysWithDictionary(dict)
    }
    
    override func setValue(value: AnyObject?, forUndefinedKey key: String) {
        
    }
    
    //保存对象
    func saveAccount() {
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("account.plist")
        NSKeyedArchiver.archiveRootObject(self, toFile: path)
        
    }
    
    //归档方法  类方法
    class func loadAccount() ->UserAccount? {
        let path = (NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).last! as NSString).stringByAppendingPathComponent("account.plist")
        if let account = NSKeyedUnarchiver.unarchiveObjectWithFile(path) as? UserAccount {
            //判断用户的 token 是否过期
            if account.expires_date?.compare(NSDate()) == NSComparisonResult.OrderedDescending {
            
                return account
            }
            
        }
        return nil
        
    }
    
    //解档
    required init?(coder aDecoder: NSCoder) {
        access_token = aDecoder.decodeObjectForKey("access_token") as? String
        expires_in = aDecoder.decodeDoubleForKey("expires_in")
        uid = aDecoder.decodeObjectForKey("uid") as? String
        avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
        name = aDecoder.decodeObjectForKey("name") as? String
        expires_date = aDecoder.decodeObjectForKey("expires_date") as? NSDate
    }
    
    //归档
    func encodeWithCoder(aCoder: NSCoder) {
        aCoder.encodeObject(access_token, forKey: "access_token")
        aCoder.encodeDouble(expires_in, forKey: "expires_in")
        aCoder.encodeObject(uid, forKey: "uid")
        aCoder.encodeObject(avatar_large, forKey: "avatar_large")
        aCoder.encodeObject(name, forKey: "name")
        aCoder.encodeObject(expires_date, forKey: "expires_date")
        
    }
    
}
